Usual first interview by recruiter then by rhe business owner, director or manager level depending on the role then panel interview and final for salary negotiations lot of back and forth

Process was over 5 weeks long. Had about one task per week (HR screen, then an initial interview, then three interviews in one day, then a homework assignment, then had to present the assignment). After the interviews concluded I was mistakenly called and left a voicemail in which the recruiter said I was offered the job. This was before I was assigned the homework assignment. After I presented the homework assignment the recruiter emailed to say she wanted to schedule a call to talk about next steps. I emailed my availability and then was ghosted. I wish they would have simply reached out to say the position had been filled. Seems very disrespectful to not even send a rejection email after I put several hours of my time into the process.